Coin-controlled attachment for locks.



W. SQPARNSWORTH GOIN GONTROLLED ATTACHMENT POE LOCKS.

APPLICATION FILED APR.y Z27 1912.

Patented Nov. 26, 1912.

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W.- S. FXRNSWORTH'. com ooNTRoLLED ATTACHMENT PoR LOCKS.

APPLI'OATIQN rmxp APR. z2, 1912 Patented Nov. 26, 1912.

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'WILLIS Si lFARNSUTORIH, 0F SAN FRANCISCO, CALIFORNIA, ASSIGNOR T0 COIN CONTROLLED LOCK COWOF SAN FRANCISCO, CALIFORNIA, A CORPORATION OF CALIFORNIA.

COIN-CONTROLLED ATTACHMENT FOR LOCKS.

Specification of Letters Patent.

Patented Nov. 26, i912.

Application filed yApril 22, 1912. SerialNo. 692,386.

To ull it may concer/e:

Be it known that l, WILLIS S. Farns-1 and State of California, have invented new `*and useful lim-provements in Coin-Con# trolled Attachments for Locks, lof which the following is a speci-cation.

This invention relates to a coin controlled attachment for locks, and particularly per-e `tains lto a device for permitting the opera; tion of the lockand :the withdrawal of the.l

key therefrom only on1 the depositing of a. proper 'coin or token.

It is the object of this invention to provide a coin controlled attachment suitable for any character-of flock wherein it is necessary that the `key of the 'lock be disposed in a certain' position in the lock before. it can be withdrawn therefrom, by means of which attachment the key will be securely 'held against withdrawal when the bolt is in its retracted vor unlocked position.

A 'further object is to provide an attachment `of the above character which is so constructed as to operate only on the depositing of a proper coin or token, to allow .the key being turned to throw the bolt and thereafter be withdrawn from the lock.

Another object is to provide means for eX- posing theco'in or token when 4the bolt has been advanced'and the key removed from theV lock.

`A further Objectis to provide means controlled by a key for retaining the attachment in the coin exposing position and which means is operated by the insertion 'or turning of the key in the lock in such manner as to release the coin supporting device and admit of its being operated when the key is turned to throw the bolt, to discharge the coin into a receptacle.

Another object is to provide a device of the above character which lis adapted to bc attached to .the escutcheon plate or outer face of the lock, and which is not dependent upon any portion or part of the movable l members of the lock for its operation, other than the key thereof.

A further object is to provide a coin controlled device for preventing the withdrawal'` 1 of .keys from lockswhich is simple in construction and efiicient in operation, and which may be applied to most locks now generally 1n-l use without materially altering the lock' structure.

Other objects will appear in the following specification.

The invention consists of the parts and the construction and combination of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which- Figure l is a front elevation of the invention as applied to a tumbler lock. Fig. 2 is a side elevation of same.' Fig. 3 is a rear view of the tumbler lock. Fig. 4 is a plan View. Fig. 5 is a vertical section on the line W--W-ofFig. l. Fig. 6 is a horizontal section on the line X-X of Fig. 3. Fig. 7 is a front elevation of the attachment -on a tumbler lock with .parts broken away. Fig. 8 is a front elevation of the invention as applied to a dead bolt lock wit-h parts broken awaywith the attachment in its normal retracted position. same. Fig. 10 is a. view corresponding to Fig. 8, showing the attachment in its advanced position. the attachment in rthe position shown 'in' vertical section on the lint Y-Y of AFig-.510.

. Fig. 14 is a detail perspective view of thel key employed in the dead bolt lock,.illus trating the manner of releasing theattach.

ment from itslocked ladvanced position.

In vthe drawings A represents theface- Fig. 9 Ais a .rear view vof Fig. ll is a rear vview of,

plate or escutcheon of a lock of any suitable type or construction; Figs. l to 7, inclusive,

illustrating a .lock lof :the wellv knownA -Yale or tumbler-type; and Figs. 8 to lakfinclu. sive, illustrating the application `oftlie invention to'locks of the dead bolt type. '.'lhe

keyhole of the lock is indicated at lzfinto which a -key C is designed -to be inserted for' the purpose of advancing 'or-retracting the' bolt D of the rlock in theusual manner.

In the form'of lock shown in Figs'. .1 to '7, 'l

inclusive, the key C is formed with'a substantially liat shanl which is rectangular in cross-section and .s formed with "a series lof notches or serrations` on its upper edge, which serrations are designed to actuate a series of tumblers E and F, of the ordinary barrelor tumbler lock. The keyhole B in this instance is formed in a barrel Gr revolubly mounted in a casing H, and the tumblers E and F are mounted in recesses I formed in the casing H and are designed to extendA into perforations formed in the barrel Gr opening Ato the key-hole B, which extends longitudinally therethrough. In locksv of this vcharacter the key C, when inserted inthe keyhole B, is designed to dispose the superposed tumblers E and F in such position that the line of separation between the Itumblers E and F will -coincide with the periphery of the barrel G so that the latter may be freely rotated within thet casing ll; the tumblers F extending into the sei-rations onv the upper edge of the key C in such manner as to prevent the Akey C being withdrawn from the keyhole -B when the tumblers F are positioned out of alinement with the tumblers E. The bolt D in this form of lock is operated by means of a bit J carried by the barrel Cr, which bit en gages a notch K formed inthe bolt D in such manner that when the barrel Crv is rotated, the bolt D may be either advanced or retracted. l

The present invention when applied to locks of the character just described, and as shown in Figs. l to 7 inclusive, is constructed as follows: Mounted on the outer face of the lock is a movable plate 2, which plate is designed to be pivoted to rock from side to side on the aXis of rotation of the key C; the plate 2, in this case, being shown as rigidly mounted on the barrel lt is obvious, however, that the plate 2 may be mounted in any other manner whereby it may be rocked i'nvunison with the key C.

The plate 2 is formed with a slot or pertoi-ation 8, which registers with the key.- hole B in the barrel G through which the shank of, the key C is inserted. The plate 2 is here shown as normally extending upward at an angle, as indicated in dzotted lines in Fig. l, and in full lines in Fig. 7; the plate 2 being s o disposed in relation to t-he outer face ot' the lock A as to form a space a.p|'n'oximately the thickness of a coin therebehind. rl`he side-edges ot' the plate 2 are bent inwardly to form flanges 4 4, the outer edges of which flanges contact the :tace plate or escutcheon A of the lock, thus forming a channel into which a coin may be delivered at the upper or outer end of vthe plate 2, in any desired manner. The plate l2 is normally rigidly held against movement by means oi a pin or other abutment member 5, mounted on the face plate or escutcheon A in such position as to engage the flange 4 to limit of movement of the plate 2 in one direction.. .A pawl or; trip-lever G is pivotally mounted at 7 on the' back of the plate 2, the inner end of which is notched at 8 to engage a pin' or projection 9l mounted on the face plate or escutcheon A, when the plate 2 is in its normal lowermost or oblique position, as shown in Fig. 7 the engagement of the pawl'8 with the pin 9 acting to limit the movement of the plate 8 toward its vertical or uppermost position. The pins 5 and 9 thus act collectively to normally retain the plate 2 in its oblique position, thus positioning 'the barrel. G and the key 'C therein with the tumblers F out of alinement with the tumblers E, in which position the key C cannot be withdrawn, as is well-known in locksv of this character. In the operation of this form of the invention, a coin or other token L of a suitable diameter is inserted in the space behind the plate 2, between the flanges 4 4; the coin or token L falling upon the outer end of the trip-lever 6where it is` supported, as shown in Fig. 7. The

key C is then turned to move the plate 2 a short distance toward the vertical, which movement is accomplished by reason of a slight lost motion permitted between the engagement of the notch 8 on the trip-lever 6 and the pin 9. This initial movement of the plate 2 brings the coin or token L, supported on the trip-lever 6, beneath the pin 5, which pin is spaced 'from the outer end of the trip-lever 6 a distance slightly less than the diameter of the coin or token L. This action causes the coin or token L to move downward and thereby depress the outer end of the trip-lever 6 in opposition to a spring 10 carried by the plate 2 and bearing upward on the outer end of the trip-lever, thereby raising the inner end of the trip-lever 6 out of engagement with the pin 9, as shown in dotted lines in Fig. 7, so that the plate 2 may be moved into the vertical position shown in Fig. 1. When this action is accomplished the barrel Gr will be disposed in such position that the tumblers F and E will be in alinement and thereby permit the key C being withdrawng'the barrel G on moving into this position acting through the bit J to advance the bolt D into its locking position. l

Means are provided for securely holding theplate 2 against movement in its vertical position when the key ,C is withdrawn, which means is here shown in Figs. l to 7 as consisting of a spring member ll, mounted on the face-plate or escutcheon A and normally bearing against the back of the plate 2, which member is designed to spring into and engage the slot 2. when the plate 2 is moved into its vertical position, thereby locking the plate 2 against movement until the key C is reinserted in the lock, as'later described.

The coin or token L will be supported upon the trip-'lever (i when the plate 2 is -in its locked verticalposition, and is eX- posed to view through a perforation 12 formed in the :plate 2, as shown in Fig. 1, thus enabling a person to ascertain the character of the coin or token deposited behind the plate 2 and thereby tending to prevent the use of spurious coins or improper tokens.

Formed in the face-plate or escutcheon A, rearward of the plate 2, is a vertical slot 13, the side Walls of which are cut diagonally to the thickness of the plate A; one edge of the slot being beveled in such inanner that When the coin or token L is disposed adjacent thereto on the trip-lever 6, which occurs when the plate 2 is in its vert-ical position, a spring plate 14 on the plate A. will act to crowd the coin or token L against the beveled Jtace of the slot 13 and thereby dis-u pose it at such an angle that when the platefJ 2 is moved to restore itto its normal oblique y position, the coin will be caused to pass through the slot 13 and be delivered to any suitable receptacle. lin some instances the spring 14: may be dispensed with, as the coin will have a' tendency to tip and lean against the beveled Wall of the slot 13 and thereby position one of its vertical edges rearward of the forward edge of the other' side of the slot 125, so that when the plate 2 is retracted the coin will be engaged by the forward edge or" the slot and directed therethrough.

From the foregoing it will be seen that when it is desired to operate the lock to throw thebolt D, it will be necessary to deposit a certain coin or token behind the plate 2, so as to permit ot the operation otthe key C, as before described; t-he key being Withdrawn when the bolt D is thrown, leavingA the plate 2 locked in its vertical position by the spring member 11 with the coin L eX- ptsed in the perforation 12. llfhen it is desired to retract the bolt D to unlock the lpck, the key C is reinserted in the keyhole B through the slot 3. A. shoulder 15 formed on the key C acts to depress the spring member 11 and throw it out of engagement with the Walls of the slot 3, thereby permitting the plate 2 'beingl restored to its normal position; the coin L passing through the slot- 13 on this operation, as above described.

guard 16 in the form of a flange is mounted 'on the tace plate or escutcheon A above the upper end of the plate 2 in such manner as to close. the open Ispace between the tlanges (i-Ll When the plate, 2 is in its vertical position, thereby preventing the insertion of instruments at this point; a coin chute, not shown. leading to the upper end of the plate 2 in its oblique position to prevent tampering With the coinoperating mechanism behind the plate 2.

'the perforation 12 is preferably covered with some transparent material so to prefitat access being had to the eoin L., when 'the plate 2 is in its vertical position, and to prevent the insertion oit tools for operating 'the trip-lever (5 when in its oblique position.

ln the form of the invention shown in Figs. 8 to lei, wherein. it is illustrated as applied to a. lock of the dead-bolt type, the,

plate 2 is pivoted at 17 to the :tace-plate or escutcheon A below the axis of rotation of the shank of a dead-bolt key, indicated at C, which is designed to be inserted. in a keyhole B in Athe face-plate or escutcheon` A. through a slot 3 formed in the plate2 to operate the lock bolt Drin the usual manner. Mounted on the plate 2, between the flanges fl--t and reciprocable longitudinally thereon, is a, plate or bolt 6 which extendsfrom the upper end of the plate 2 to a point below the slot 3, and which is formedl with a perforation 18 through which the key C extends, and with the lower Wall of which perforation a bit 15 on the key C is engageable, as will be later described. The upper end of the bolt 6 terminatesadjacent to the upper end of the plate 2 and is formedwith a projection or pin 8 which is adapted to extend into a slot 9 formed in a iiange 1S carried on the face-plate or escutcheon A. The projection 8 extending into the slot 9 is provided as a means for retaining the plate 2 in its lowermost or oblique position; a plate spring 10 carried by the plate 2 bearing against the underside of the bolt G in such a manner as to nornially retain the projection 8 in engagement with the slot 9. This slot 9 is of such length as to permit of a limited movement of the plate 2 on its pivot 17. Formed on the inner tace of the bolt 6 is a pin or other projection 19 on which the coin L is designed to rest when inserted in the upper end ot' the plate 2. Formed on the inner side of the plate 2, 'below the bolt 6, is a notch 20, the side Walls of which project beyond the inner face of the-bolt 6 and form shoulders or projections which are disposed inthe path of` travel of the bit 15 on the key C, so as to be engaged thereby when the latter is rotated to throw the lock bolt D in either direction.

In the application of the invention now under consideration, the key C is inserted in the keyhole B of the lock, with the bit J thereon in engagement with the bolt D 'when the latter is in its retracted position in the'manner connnon in dead-bolt locks;

vthe key C being turnedto dispose the bit J out ot' alineinent with the keyhole B, shown in Fig'. S, so as to prevent its being, withdrawn from the lock. The key C is prevented trom being' turned .sufficiently far to throw the holt 1) and to hold the bit J out ot alinement with the keyhole BS, by reason of the engagement of the bit 15 with the side walls of the notch 20, formed on the pivotod plate 2; the plate 2 being locked against movement by reason of the projection 8 on the bolt 6 extending intothe slot 9. In the operation of. this form of invention, the coin L is inserted behind the pivoted.l coin-receiving plate 2 where it rests `upon the projection 19 on the bolt 6. The

key C 's then turned so as to move the bit in the, direction of the arrow thereon in Figs. 8 and 12 into engagement with the walls of the notch on the plate 2, so as togive the plate 2 a slight movement on its pivot, which initial movement is permitted by reason of the slotted connection with the projection 8 on the bolt 6.' The coin L will now be crowded under a projection 5', here indicated as formed by the flange 16'; this action moving the colin downward in such manner as to depress the bolt 6 in op-v position to the spring 10 and thereby withdraw the projection-8 out ofengagement with the slot 9', so that acontinued movement of the key C will carry the plate 2 into its advanced position, as shown in Fig. 10;v This being accomplished, the key C may be turned so as to dispose the bit J in alinement with the keyhole B and admit of ration 12 in the plate 2 and a perforation 12 formed in the bolt 6. When it is desired to unlock the lock, the key C is reinserted in the keyhole B and is turned in the direction of the arrow in Fig. 11; the bit J engaging the bolt D to retract it in the usual manner. A shoulderla on the bit 15 engages the'lower edge of the perforation 18 in the bolt 6 in such manner as to depress the bolt 6 in opposition to the spring 10 and withdraw the projection 8 out of engagement with the notch 11 as the bit 15 engages the notch 2O on the plate 2. This being done, continued movement of the key C causes 'the bit 15 to act on the pivoted plate2 to restore it to its normal position,

shown in Fi g.

8 being engaged bythe slot 9. The plate 2 being retracted to its normal position causes the coin L to pass'thmugh a slot 13 in the viously described.

It is manifestfthat this invention-is not llimited to use on tumbler or dead-bolt locks,

8, in which posit-ion it 1s again 4locked'against movement by the projection but it is applicable to any typeof lock in which a key is employed.

Having thus described my invention, what I claim and desire tossecure by Let-ters Patent is'- 1. The combination with a lock and a key therefor, of a pivoted plate adapted to Abe rocked by the key, means for limiting the movement of the plate in its retracted position t-o` prevent the key being withdrawn from the lock, means for supporting a c oin on the pivote-d plate, and means coactingl with a coin controlled by the key vfor permitting an increased movement of the plate i to an advanced position.

2. The combination with a lock and a key therefor, of a pivoted plate adapted to be rocked by the key, means for limiting the movement of the plate in its retracted position to prevent the key being withdrawn from the lock, means for supporting a coin on the pivoted plate, means coacting with a coin controlled by the key for permitting an increased movement of the plate to an advanced positionfand means for locking the i' Iplate in its advanced position.

3. The combination with a lock and a key therefor, of a pivoted plate adapted to be rocked by the key, means. for limiting the movement of the plate in its retracted position to prevent the key being withdrawn from the lock, means for supporting a coin on the pivoted plate, -means Acoacting with a coin controlled by the key for permitting an increased movement of the plate to an advanced position, and means for locking the plate in its advanced position, said means operated by the key to unlock the plate and permit its being retracted.

4. The combination with a lock and a key therefor, of a pivoted plate adapted to be rocked the movement of the plate in its retracted.

position to prevent the key being withdrawn fromthe lock, means for supporting a coin l 110 on the pivoted plate, means coacting with a coin controlled by the key for permitting an increased movement of the plate to an by the key, means for limiting l advanced position, means for locking the plate in its advanced position, said means operated by the key to unlock the plate and permit its being retracted, means for exposing.l the coin when the plate is in its advanced positionj and means for discharging the coin on the retraction of the plate.

5. An attachment for locks comprising a pivoted plate,A means for supporting a coin .on the plate, means controlled by a key for rocking the plate, means for limiting the movement of the plate, rigid means for engaging a coin carried by the plate within the limited range of movement of the plate to depress the coin, and means opllas erated by the depression of the coin for releasing the plate and admitting a greater movementthereof. y

6. An attachment for locks comprising a pivoted plate, means for supporting a coin on the plate, means controlled by a key for rocking the plate, means for limiting the movement of the plate, rigid means for engaging a coin carried by the plate ivithin the limited range of movement of the plate todepress ,the coin, means operated by the depression of the coin for releasing the plate and admitting a greater movement thereof, and means for locking the plate in its advanced position.

T. An attachment for locks comprising a pivoted plate, means for supporting a coin on the plate, means controlled by a key for rocking the plate, means for limitingthe movement of the plate. rigid means for engaging a. coin carried by the plate within the limited range of movement of the plate tol depress the coin, means operated by the depression of the coin for releasing the plate and admitting a greater movement thereof, means for locking the plate in its advanced position, and means for exposing the Coin through the plate When in its advanced position.

8. An attachment 'for locks comprising a pivoted plate, means for supporting a coin on the plate, means controlled by a key for rocking the plate, means for limiting the movement ofthe plate, rigid means for engaging a coin carried by the plate.Within the limitedrange of movement of the plate tovv depress the coin, means operated by the depression of the coin for releasing the plate and admitting a greater movement thereof, means' for locking the plate in its advanced position, means for exposing the coin through the plate when in its advanced position, and means operated by the key for releasing the plate froml its locked advanced position.

' 9. An attachment for locks comprising a pivoted plate, means for supporting a coin on the plate, means controlled b a key for 'rocking the plate, means for limiting the movement of the plate, rigid means for engaging a coin carried by the plate within the limited range of movement of the plate to depress the coin, means operated by the depression of the coin for releasing the` plate and admitting a greater movementl vent the Withdrawal of the key from the lock adapted to be operatedby a coin of a certain diameter to release the plate and permit its being advanced by the key.

ln testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

` VILLIS S. FRNSWORTH. Witnesses JOHN H. HERRING, GENEVIEVE S. DONELIN. 

